CPUBoss Review Our evaluation of E3-1275 v2 vs E3-1240 v2 among all CPUs

Performance

Benchmark performance using all cores

PCMark 8 Home 3.0 Accelerated, PassMark and 1 more

Single-core Performance

Individual core benchmark performance

PassMark (Single Core), Geekbench 3 Single Core and 1 more

Integrated Graphics

Integrated GPU performance for graphics

Sky Diver and Cloud Gate

Integrated Graphics (OpenCL)

Integrated GPU performance for parallel computing

CompuBench 1.5 Bitcoin mining and 4 more

Performance per Watt

How efficiently does the processor use electricity?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

Value

Are you paying a premium for performance?

Sky Diver, Cloud Gate, CompuBench 1.5 Bitcoin mining and 11 more

8

CPUBoss Score

Combination of all six facets

Winner
Intel Xeon E3-1240 v2 

CPUBoss recommends the Intel Xeon E3-1240 v2  based on its cost to run.

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VS

Differences What are the advantages of each

Front view of Intel Xeon E3-1275 v2

Reasons to consider the
Intel Xeon E3-1275 v2

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Has a built-in GPU Yes vs No Somewhat common; A separate graphics adapter is not required
Higher clock speed 3.5 GHz vs 3.4 GHz Around 5% higher clock speed
Higher turbo clock speed 3.9 GHz vs 3.8 GHz Around 5% higher turbo clock speed
Front view of Intel Xeon E3-1240 v2

Reasons to consider the
Intel Xeon E3-1240 v2

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Lower typical power consumption 56.06W vs 62.56W More than 10% lower typical power consumption
Lower annual commercial energy cost 60.44 $/year vs 67.45 $/year More than 10% lower annual commercial energy cost
Lower annual home energy cost 16.62 $/year vs 18.55 $/year More than 10% lower annual home energy cost

Benchmarks Real world tests of Xeon E3-1275 v2 vs E3-1240 v2

GeekBench 3 (Multi-core) Data courtesy Primate Labs

GeekBench 3 (Single core) Data courtesy Primate Labs

GeekBench 3 (AES single core) Data courtesy Primate Labs

Xeon E3-1275 v2
2,660,000 MB/s
Xeon E3-1240 v2
2,500,000 MB/s

GeekBench (32-bit) Data courtesy Primate Labs

GeekBench (64-bit) Data courtesy Primate Labs

GeekBench

PassMark Data courtesy Passmark

PassMark (Single Core)

Specifications Full list of technical specs

summary

Xeon E3-1275 v2  vs
E3-1240 v2 
Clock speed 3.5 GHz 3.4 GHz
Turbo clock speed 3.9 GHz 3.8 GHz
Cores Quad core Quad core
Socket type
LGA 1155

features

Has a NX bit Yes Yes
Supports trusted computing Yes Yes
Has virtualization support Yes Yes
Instruction set extensions
SSE2
MMX
SSE4
AVX
SSE3
SSE
SSE4.1
SSE4.2
Supplemental SSE3
AES
Supports dynamic frequency scaling Yes Yes

power consumption

TDP 77W 69W
Annual home energy cost 18.55 $/year 16.62 $/year
Annual commercial energy cost 67.45 $/year 60.44 $/year
Performance per watt 13.41 pt/W 15.68 pt/W
Typical power consumption 62.56W 56.06W

bus

Architecture DMI DMI
Number of links 1 1
Transfer rate 5,000 MT/s 5,000 MT/s

details

Xeon E3-1275 v2  vs
E3-1240 v2 
Architecture x86-64 x86-64
Threads 8 8
L2 cache 1 MB 1 MB
L2 cache per core 0.25 MB/core 0.25 MB/core
L3 cache 8 MB 8 MB
L3 cache per core 2 MB/core 2 MB/core
Manufacture process 22 nm 22 nm
Max CPUs 1 1
Clock multiplier 35 34

overclocking

Overclock popularity 6 10

integrated graphics

GPU GPU None
Label Intel® HD Graphics P4000 N/A
Number of displays supported 3 N/A
GPU clock speed 650 MHz N/A
Turbo clock speed 1,250 MHz N/A

memory controller

Memory controller Built-in Built-in
Memory type
DDR3-1600
DDR3-1333
DDR3
Channels Dual Channel Dual Channel
Supports ECC Yes Yes
Maximum bandwidth 25,600 MB/s 25,600 MB/s
Maximum memory size 33,556.48 MB 33,556.48 MB
Intel Xeon E3-1275 v2
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Intel Xeon E3-1240 v2
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